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Surface Roughness Conversion Chart of Stainless Steel Tube By yaang.com
Stainless Steel Tube's Surface roughness is the measure if the finer surface irregularities in the surface texture. These are the result of the manufacturing process employed to create the surface. Stainless Steel Tube's Surface roughness Ra is rated as the arithmetic average deviation of the surface valleys and peaks expressed in micro inches or micro meters. ISO standard use the term CLA (Center Line Average). Both are interpreted identical.
Ra
micro-meters |
Ra
micro-inches |
RMS
|
CLA
(N) |
Rt
|
N
|
Cut-Off Length
|
|
in.
|
mm
|
||||||
0.025
|
1
|
1.1
|
1
|
0.3
|
1
|
0.003
|
0.08
|
0.05
|
2
|
2.2
|
2
|
0.5
|
2
|
0.01
|
0.25
|
0.1
|
4
|
4.4
|
4
|
0.8
|
3
|
0.01
|
0.25
|
0.2
|
8
|
8.8
|
8
|
1.2
|
4
|
0.01
|
0.25
|
0.4
|
16
|
17.6
|
16
|
2.0
|
5
|
0.01
|
0.25
|
0.8
|
32
|
32.5
|
32
|
4.0
|
6
|
0.03
|
0.8
|
1.6
|
63
|
64.3
|
63
|
8.0
|
7
|
0.03
|
0.8
|
3.2
|
125
|
137.5
|
125
|
13
|
8
|
0.1
|
2.5
|
6.3
|
250
|
275
|
250
|
25
|
9
|
0.1
|
2.5
|
12.5
|
500
|
550
|
500
|
50
|
10
|
0.1
|
2.5
|
25.0
|
1000
|
1100
|
1000
|
100
|
11
|
0.3
|
8.0
|
50.0
|
2000
|
2200
|
2000
|
200
|
12
|
0.3
|
8.0
|
Conversions (math):
CLA (micro inches) = Multiply Ra(µm) x 40
RMS * (acceptable 1.1 - 1.7 factor) = Multi
ply CLA x 1.1
Source: Yaang Pipe Industry Co., Limited (www.yaang.com)
Tel No：+86-18267732328 / Email:[email protected]
Address：Longwan District, Wenzhou, Zhejiang Province, China.
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